diff --git a/ssl/ssl_test.cc b/ssl/ssl_test.cc
index 3709a46..3515f60 100644
--- a/ssl/ssl_test.cc
+++ b/ssl/ssl_test.cc
@@ -8042,6 +8042,8 @@
   SSL_CTX_set_verify(client_ctx.get(),
                      SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
                      nullptr);
+  X509_VERIFY_PARAM_set_flags(SSL_CTX_get0_param(client_ctx.get()),
+                              X509_V_FLAG_NO_CHECK_TIME);
 
   struct TestCase {
     X509 *cert;